netdev - [PATCH v2] netlink: reset skb->peeked when reuse orphan skb for next broadcast

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Message-ID: <20150710122134.21653.46736.stgit@buzz>
Date:	Fri, 10 Jul 2015 15:21:34 +0300
From:	Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
To:	netdev@...r.kernel.org, "David S. Miller" <davem@...emloft.net>
Cc:	Eric Dumazet <edumazet@...gle.com>,
	Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH v2] netlink: reset skb->peeked when reuse orphan skb for
 next broadcast

This patch clears skb->peeked set by previous recipient of broadcast.

Signed-off-by: Konstantin Khlebnikov <khlebnikov@...dex-team.ru>
Fixes: add05ad4e9f5 ("unix/dgram: peek beyond 0-sized skbs")
---
 net/netlink/af_netlink.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 921e0d8dfe3a..f4427f4bf223 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1967,6 +1967,7 @@ static void do_one_broadcast(struct sock *sk,
 			 * delivered to a previous socket.
 			 */
 			skb_orphan(p->skb2);
+			p->skb2->peeked = 0;
 		}
 	}
 	if (p->skb2 == NULL) {

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